LITTLETON, Colo. (AP) - A Colorado hospital says a suburban Denver high school student has died more than a week after being shot by a classmate who then killed himself.

Seventeen-year-old Claire Davis had been in critical condition after being shot at point-blank range at Arapahoe High School on Dec. 13. Friends and well-wishers had been posting prayers online and raising money to help pay for her medical care.

Arapahoe County Sheriff Grayson Robinson says Davis appeared to be a random target.

Authorities say 18-year-old Karl Pierson was likely targeting a librarian who had disciplined him when he entered the school with a shotgun, a machete and three Molotov cocktails. Robinson says Pierson shot Davis before killing himself. The librarian escaped the school unharmed.

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